Annual Report of the State Botanist. 35 



In our plant there is apparently a tendency to branch and divide 



more freely at the apex of the frond and less freely and deeply at 



the apices of the segments than in the European. So far as I know 



it has not before been found in this country. Probably there will 



be a considerable demand for it by lovers and propagators of ferns, 



but it is to be hoped that specimens will not be taken so freely from 



the patch as to destroy the station. 



• 



Isoetes echinospora Durieu. 



Cheney pond. August. 



Riccia fluitans L. var. SuUivantii Aust. 

 Muddy places in ditches. Selkirk. June. 



CoUybia Familia Pk. 



This species is not rare in Cattaraugus county. It grows in clus- 

 ters of very many individuals on old prostrate trunks and decaying 

 wood of hemlock. It varies in color from nearly white to brown. 

 It is somewhat hygrophanous and the stem is more or less villose- 

 tomentose at the base. It is allied to C. acervata, but the pileus is 

 not umbonate, there are i'K) rufous or incarnate tints either in the 

 pileus lamellae or stem, and the spores are minute and globose 

 .00012 to .00016 inch in diameter, not elliptical as in that species. 



Pleurotus atrocaeruleus Fr. 



In Sylloge the spores of this species are said to be globose, 2 to 3 

 mk. in diameter. If this is correct then the plant referred to this 

 species in Report 39, p. 65, must be distinct. On the other hand 

 both Smith and Cooke represent the spores of this species as 

 elliptical and closely agreeing- with those of the American plant in 

 dimensions. 



On the supposition that the Eng-lish mycologfists are correct in 

 their representations of the spores of this species our plant can 

 scarcely be more than a variety differing in color from the type. 

 Fine specimens were found at CarroUton growing on the trunk of a 

 cucumber tree. It seems best at least to designate it as a variety, 

 for it does not appear to exhibit at all the dark blue hue so 

 characteristic of the tyjje. 



Var. griseus. Pileus grayish or grayish-brown, clothed with 

 rather coarse pointed whitish or grayish hairs ; lamellae not broad ; 

 spores elliptical, sometimes slightly curved, .0003 in. long, .00016 

 broad. 



